28522523 has 8 divisors (see below), whose sum is σ = 29462160. Its totient is φ = 27591840.

The previous prime is 28522517. The next prime is 28522537. The reversal of 28522523 is 32522582.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28522523 - 2⁸ = 28522267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28522513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4568 + ... + 8826.

It is an arithmetic number, because the mean of its divisors is an integer number (3682770).

Almost surely, 2^28522523 is an apocalyptic number.

28522523 is a deficient number, since it is larger than the sum of its proper divisors (939637).

28522523 is a wasteful number, since it uses less digits than its factorization.

28522523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477.

The product of its digits is 9600, while the sum is 29.

The square root of 28522523 is about 5340.6481816349. The cubic root of 28522523 is about 305.5361812852.

The spelling of 28522523 in words is "twenty-eight million, five hundred twenty-two thousand, five hundred twenty-three".